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Finding the Fourth Proportional to 127,854.04, 191,781 and 39,107.56

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Solution

The fourth proportional to 127,854.04, 191,781 and 39,107.56 is: 58,661.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,854.04 : 191,781 = 39,107.56 : x
  2. Step 2: Convert to fraction form
    127,854.04/191,781 = 39,107.56/x
  3. Step 3: Cross multiply
    127,854.04x = 191,781 × 39,107.56
  4. Step 4: Simplify right side
    127,854.04x = 7,500,086,964.36
  5. Step 5: Solve for x
    x = 7,500,086,964.36/127,854.04
  6. Step 6: Final answer
    x = 58,661.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.